50220213531 has 4 divisors (see below), whose sum is σ = 66960284712. Its totient is φ = 33480142352.

The previous prime is 50220213523. The next prime is 50220213541. The reversal of 50220213531 is 13531202205.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 50220213531 - 2³ = 50220213523 is a prime.

It is a super-2 number, since 2×50220213531² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50220213541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8370035586 + ... + 8370035591.

It is an arithmetic number, because the mean of its divisors is an integer number (16740071178).

Almost surely, 2^50220213531 is an apocalyptic number.

50220213531 is a deficient number, since it is larger than the sum of its proper divisors (16740071181).

50220213531 is a wasteful number, since it uses less digits than its factorization.

50220213531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16740071180.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 50220213531 its reverse (13531202205), we get a palindrome (63751415736).

The spelling of 50220213531 in words is "fifty billion, two hundred twenty million, two hundred thirteen thousand, five hundred thirty-one".